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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef SIMPLE_PERF_EVENT_H_
     18 #define SIMPLE_PERF_EVENT_H_
     19 
     20 #include <stdint.h>
     21 #include <string>
     22 #include <vector>
     23 
     24 // EventType represents one type of event, like cpu_cycle_event, cache_misses_event.
     25 // The user knows one event type by its name, and the kernel knows one event type by its
     26 // (type, config) pair. EventType connects the two representations, and tells the user if
     27 // the event type is supported by the kernel.
     28 
     29 struct EventType {
     30   bool IsSupportedByKernel() const;
     31 
     32   const char* name;
     33   uint32_t type;
     34   uint64_t config;
     35 };
     36 
     37 class EventTypeFactory {
     38  public:
     39   static const std::vector<const EventType>& GetAllEventTypes();
     40   static const EventType* FindEventTypeByName(const std::string& name,
     41                                               bool report_unsupported_type = true);
     42   static const EventType* FindEventTypeByConfig(uint32_t type, uint64_t config);
     43 };
     44 
     45 #endif  // SIMPLE_PERF_EVENT_H_
     46